Network autotransformers
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To improve voltage conditions in low-voltage networks, we manufacture standard single-phase (AMTES) and three-phase (ATTES) autotransformers.
Both types of autotransformers can be manufactured as enclosed-type (in a protective enclosure) or open-type, depending on the required installation.
At the customer's request, other rated powers and transformation ratios are possible.
Low voltage
Network autotransformers in enclosure (AMTES and ATTES)
Voltage: up to 1 kV | Power: 5 - 20 kVA (single-phase) / 10 - 50 kVA (three-phase)
In addition to the autotransformer, additional control and protection equipment is installed in the enclosure:
- Moulded case circuit breakers, connected on the 400 V rated voltage side, which, in addition to switching the device on and off, are fitted with overcurrent (0,8–1)×In and short-circuit protection releases.
- Surge arresters intended to protect the transformer and connected loads against lightning overvoltages.
Autotransformer in an opened enclosure
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Low voltage
Open-type network autotransformers (AMTES and ATTES)
Voltage: up to 1 kV | Power: 5 - 20 kVA (single-phase) / 10 - 50 kVA (three-phase)
